TP316 TP316L Precision Instrumentation Tubing ISO Certified ASTM A269

TP316 TP316L Precision Instrumentation Tubing ISO Certified ASTM A269

Why Does Instrumentation Tubing Matter?

Instrumentation tubing consists of small-diameter, precision-engineered pipes used to connect pressure instruments, control valves, and industrial equipment. These tubes primarily serve functions such as pressure transmission, the transport of hydraulic media, and fluid sampling for instrumentation. Because such piping often requires on-site bending and connection via compression fittings, the material must meet stringent requirements regarding outer diameter tolerance, wall thickness uniformity, surface quality, and sealing reliability.

MTSCO supplies TP316/TP316L welded instrumentation tubing that complies with the ASTM A269 standard. Through processes including welding, cold working, and bright annealing, the tubing achieves excellent surface quality and workability, facilitating on-site bending and the installation of fittings. Finished products undergo dimensional inspection, Positive Material Identification (PMI), eddy current testing (ET), and pneumatic or hydraulic testing to ensure the dimensional consistency and structural integrity required for industrial instrumentation piping.

Specifications Of 316 Instrumentation Tubing

Why Choose Siri Tubing?

Siri Tubing, a specialized manufacturing facility for tubing and control lines under the MTSCO brand, operates a 7,000-square-meter plant with a production capacity of 150 tons per month. Our product portfolio includes instrumentation tubing, coiled tubing, control lines, and TEC (tubing encapsulated conductors). The facility is equipped with a professional laboratory and a comprehensive quality inspection system, and it holds ISO quality management system certification. With extensive experience in supporting global projects, we offer a wide range of tubing products in various materials and specifications. Please submit your project requirements to receive a quotation.

What are the characteristics of TP316 and TP316L?

Both TP316 and TP316L are molybdenum-bearing austenitic stainless steels. Compared to TP304, TP316 offers superior resistance to pitting and crevice corrosion, making it suitable for environments containing chloride ions or specific chemical media. TP316L features a low-carbon composition, which reduces the risk of intergranular corrosion in the heat-affected zone following welding. Both grades exhibit excellent toughness and formability, making them ideal for small-diameter instrumentation tubing that requires bending and connection.

Triple-Checked for Guaranteed Quality

·Secondary Raw Material Verification: Upon arrival at the facility, raw materials undergo verification against their Material Test Certificates (MTC), heat numbers, and material specifications. This includes a secondary PMI and compliance check to minimize the risk of material mix-ups (e.g., between TP316 and TP316L).

· Production Process Monitoring: Key production stages, such as welding, cold working, and heat treatment, which are documented via process cards. Quality Control (QC) personnel monitor the production process and maintain photographic records, ensuring full traceability for every batch.

·Comprehensive Pre-shipment Inspection: Finished products undergo checks for appearance, dimensions, material composition (PMI), and quantity. Additionally, they are subjected to eddy current testing (ET) and pneumatic or hydraulic testing in accordance with specific product requirements. Relevant inspection results are filed centrally; arrangements can also be made for third-party inspections by organizations such as SGS, TÜV, or BV.

Siri Laboratory

·Weld Radiographic Test Laboratory (RT)

·Chemical Composition Analysis Laboratory

·Intergranular Corrosion Test Laboratory

·Tensile Test Laboratory

·Hardness Test Laboratory

·Metallographic Laboratory

Equipped with professional instruments such as tensile testers, impact testers, metallographic microscopes, and hardness testers, the Siri Laboratory performs mechanical property and non-destructive testing, including tensile, flaring, flattening, bending, hardness, and radiographic testing. All test reports and samples are archived as required to facilitate order traceability, quality verification, and project acceptance.

FAQ

Q1: How is instrumentation tubing packaged and transported?

A1: MTSCO uses plywood crates for packaging. Each tube is individually sleeved in a plastic bag, and protective end caps are fitted to both ends. This minimizes the risk of scratches, contamination, or damage to the tube ends during transit, ensuring the product arrives in good condition for customer inspection.

Q2: What is the difference between TP316 and TP316L instrumentation tubing?

A2: Both grades contain molybdenum, providing excellent corrosion resistance. TP316L has a lower carbon content, which reduces the risk of intergranular corrosion after welding, making it the ideal choice for piping systems that require superior weldability.

Q3: Is the production process traceable?

A3: Yes. Our production process involves dedicated equipment and technical personnel. Quality Control (QC) oversees every stage, and we maintain comprehensive records, including process cards and photographic documentation to ensure full traceability.

Q4: Do you accept small-batch or customized orders?

A4: Absolutely. Through our exclusive partnership with our manufacturing facilities, MTSCO can rapidly address your custom requirements. Whether you need non-standard dimensions, specific chemical compositions, or particular mechanical properties, we can deliver efficient, tailored solutions for you.